[masraum]

Originally Posted by Wayne 962

I thought it might be the main seal - the shop has the engine and has run it for about 15 min with no leaks now.

Originally Posted by Scott Douglas

Based on the amount of dripping shown in your videos I'd say you're looking for a pressurized leak source and one that may only open up after it gets hotter than 15 minutes of running on a bench gets it.

And/or something that only happens under a load. Possibly the load causes forces to act on something like the rear main seal that might not occur otherwise.

There's a big difference between running on a bench and running under load. Many years ago, I had a problem with an old Chevy 350. I ended up in a parking lot. It would idle all day and rev in neutral. As soon as I tried to drive it, it would stall or try. I had to call dad. He futzed with it for a bit, until ultimately we swapped in a new fuel filter and the car ran fine.

Another buddy with a fairly hot Chevelle would frequently lose his brakes when he went around a left turn. Ultimately turned out that the positive from the battery to the starter would touch a brake line on a left turn. For a long time, no big deal, but once he wore through the insulation it would short, heat his brake line, boil the fluid and kill the brakes.

Good luck and keep us updated! Thanks for checking in!